When the button is pressed the Arduino board will put pin 2 in HIGH state, meaning 5V on pin 2. This voltage is used to drive the transistor that will switch ON the relay and the load (in our case the ...

Timer-Based Relay Control: The relay turns ON for a specified duration (relayOnTime) and then OFF for another specified duration (relayOffTime). By default, the relay is OFF when the Arduino powers up ...

Arduino Relay Controller via SMS as a Remote Switch In this application i have included 2 relays for two different electronic appliances to control via SMS. Relay 1 can be Switch on by sending SMS ...

The ‘unhackable’ switch, which resembles a MIDI sequencer input, runs on an Arduino Nano Every and uses a relay to directly control the power state. Instead of having one keep-alive button ...

After wiring up each outlet so it can be controlled independently, he set out designing a four port relay board. This was a pretty simple build – four 10 Amp relays and a few terminal blocks.

To solve the problem without sourcing a new switch, [Jean-Noel] built his own Arduino based Dahlander switch. This consists of three relays that select the wiring configuration for each speed mode.

Arduino Due and the Ethernet shield W5100 have the microcontroller, which has enough GPIO pins for the 16 channel relay , or 2x 8-channel relay. Since Due does not have everyone, the prepared source ...

If the stench from your cat's litter box is a bit too much for you to take, consider rigging together an exhaust system using a 120mm computer case fan, a 12vdc power supply, 4" flexible dryer ...